Burglar-proof screen.



A. R. DERGE.

BURGLAR PROOF SCREEN.

APPLIGATION FILED MAY 131913.

1,091,045, Patented Mar. 24, 1914.

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A TTORNEY COLUMBIA PLANOORAPH cc.. WASHINGTON, D. cv

A. R. DERGE.

BURGLAR PROOF SCREEN.

APPLICATION FILED MAY17 191a Patented Mar. 24, 1914.

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INVENTOR, a. 'n i m xN WITNESSES @Q ATTORNEY ALBERT R. DERG-E, OF OAKLAND, CALIFORNIA.

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To all whom it may concern:

Be it known that I, ALBERT R, DERGE, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented new and useful Improvements in Burglar-Proof Screens, of

which the following is a specification.

The object of the present invention is to provide a burglar-proof screen for doublehung windows.

Many persons whose bedroom windows are readily accessible from the ground, although desirous of sleeping with them fully opened for free access of air, donot do so for fear of burglars.

It is the object of my invention to pro-.

vide a window screen which can be so secured in a window that the window sashes may be fully opened, and yet the apartment remain practically burglar-proof, the arrangement being such as not to afiect the freedom of opening and closing of the Window,

In the accompanying drawing, Figure 1 is an inside view of a window equipped with my burglar-proof screen, the screen itself being shown in the position it occupies just before insertion in place; Fig. 2 is a broken inside view of the window showing the screen in place, but the sashes remaining to be adjusted in position; Fig. 3 is a view similar to Fig. 2 but with the sashes in position; Fig. 4 is a vertical section of the window in the latter position; Fig. 5 is an enlarged vertical section on the line 55 of Fig. 3; Fig. 6 is a broken inside view of a window to the upper part of which my invention is applied; Fig. 7 is a broken inside view of a window equipped with my invention in a modified form.

Referring to the drawing, 1 indicates the casing, 2 the upper sash, and 3 the lower sash, of a window of ordinary construction.

4 indicates the frame of my improved burglar-proof screen. The sides of said frame are connected by vertical and horizontal cross-bars 6, of which the number will increase with the size of the window, they being so arranged relatively to each other and to the sides of the frame and of such number that the openings past them are too small to permit the passage therethrough of the body of a burglar. On the inner sides of said bars iron strips 7 are secured by nails 8, which are driven through the frame from the inside, their outer ends being then Specification of Letters Patent. Application filed May 17', 1913.

. cannot readily be lowered, from the Patented Mar. 24., 1914. Serial No. reason.

clenched upon the frame as clearly shown in Fig. 5. The wire screen 9 is secured on the outside of the frame, and its edges, as likewise the clenched ends of the nails 8, are covered by wooden. strips 11, secured on the outside of the frame. It will be observed that a burglar could not gain access to the interior of the residence by cutting out the wire screens, for the. openings in the frame are too smallto permit thepassage of his body; it is practically impossible to remove the cross bars to enlarge these openings, since they are protected at the back by the iron strips 7, and these strips removed, being secured by the clenched nails.

In the bottom of the frame are secured studs or metallic dowel pins 12, which fit in sockets in plates 13 secured to the window sill 14. On the inner side of the top of the screen frame near its vertical edges, are secured bolts 16, which can enter sockets 17, formed in the parting head 18. It will be seen that these bolts are located between the paths of the side stiles of the sashes, and when the screen is in place are inaccessible from the outside of the screen. The bolts 16 are barrel bolts, requiring the handle to stand out at right angles before sliding the bolt into or out of the socket. The bolts and barrels are longer than usual in barrel bolts. When the bolts 16 have been shot into the sockets therefor, and the bolt handles 19 have been turned down, the lower sash is position shown in Figs. 1 and 2 to the position shown in Figs. 3 and 4-, and is secured in this position by means of-a bolt 21 slidably secured upon the top ofsaid sash, which then enters a-socket provided therefor in the window casing. In this position the frame of said lower sash fits closely against the handles 19 of the bolts 16, so that the bolts cannot be turned to a position from which they can be withdrawn from the sockets in the parting head. The

upper sash is also secured in its uppermost position by means of a bolt 22, which may be either an ordinary bolt, or a spring bolt, as here shown.

It will thus be seen, that with a screen of this kind, the window may be opened wide, and burglars excluded equally as well as if the windows were closed and locked.

Fig. 6 shows the screen as applied to the outside of the upper portion of a window. The same screen bolts and pins can be used by providing sockets therefor in suitable places.

In the modification of the invention shown in Fig. 7, the screen frame is of the full size of the window, but the reinforcing iron strips 7 are applied only to its upper portion, or only to its lower portion, as may be desired.

I am aware that it has been proposed to apply a safety grating to a window and secure it in place by causing parts thereof to engage sockets in the lower edge of a sash of the window, andthen locking said window sash. This construction, however, requires for its use that the freedom of movement of the window sash should be restricted. My invention difiers from those above referred to in that the screen is secured wholly to the window frame, and the window can be opened or. closed as desired without removing the screen.

Copies of this patent may be obtained for five cents each, by addressing the Washington, D. 0."

I claim In combination with a window frame, and a slid-able sash therefor, a screen, a bolt for securing said screen in position in the window frame, and having a handle located, when the screen is so secured, between the screen and the path of a side stile of said sash, and of a length sufficiently great to be prevented by said side stile and screen, when therebetween, from turning from a locking position of the bolt to an unlocking position thereof, and means for securin said sash in its said preventive position.

In testimony whereof I have hereunto set my hand in the presence of two subscribingwitnesses.

Framers M. VVmorrr, D. B. RICHARDS.

Commissioner of Patents, 

